Paper-screen.



A. I. HAUG.

PAPER SCREEN.

APPLICATION FILED IAN. 4. ISI?. Y 1 ,284,669. Patented Mv. 12, 1918;`

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A. 1. HAUG.

PAPE-R SCREEN.

APPLICATION HLED 1AN.4. asu.

1,284,669. Patented Nov. 12, 1918.

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UNITED STATES PATENT OFFICE.

ANTON J. HAUG, OF NABHUA, NEW HAMPSHIRE, ASSIGNOR T IMPROVED PAPER MACHINERY COMPANY, OF NASHUA., NEW HAMPSHIRE, A CORPORATION 0F MAINE.

PAPER-SCREEN.

Specification of Letters Patent.

Patented Nov. 12, 1.918.

Application tiled January 4, 1917. Serial No. 140,486.

To all whom it may concern:

Be it known that I, ANTON J..HAUG, a citizen of the United States, and a resident of Nashau, county of Hillsborough, State of 6 New Hampshire. (whose post-office address is Im roved Paper Machinery Company, Nashau, ew Hampshire,) have invented an Improvement in Paper- Screens, of which the following description, in connection with the accompanyingr drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to frame construction for screens or the like and particularly screens used for paper manufacture, such for example as the type of screen known as a cylinder mold, although the principles of this invention are applicable to the construction of screens used for other purposes.

The invention is more particularly concerned with the construction of a cylindrical f frame intended to serve as the support -for the foraminous covering of the screen, one object being to construct a cylindrcal'frame -work insuch form as to berelatively ipex- Eensive, easily manufactured andassent.V

led by unskilled labor,y and easily repaired.

In the case o f many lscreens 'and cylinder molds in use, the construction is such as to require highly `s'killed labor in manufacturing and assemblin and also a large amount of machining and rilling, thereby rendering the screen expensive .to construct. The con# structions of many of these' screens preclude the use of cast iron as a material for the supporting grille or frame` because' of ein ganse and weight' and many'of these cylin ers when ass'em led for a' solid, integral frame unit which not only requires skilled and expensive labor 'in building and 4assainbliiig, and particularly are expensive to machine' after assembling", but also requirespecial machinery 'when be made."

The herein-described embodiment of` my 'invention contemplates the employment of interchangeable sections,l which may be individually' accurately machined 'and drilled and then assembled by relatively unskilled help, and asembled that the. screen may be, easily ,l aired by.' removing diie damsectionP nd 'replacing it-by a similar i ,rchangei'lilje'sectiom .such repairs being n snsceptibleof being made by unskilled help, l5 Withouttlie use of special vmachinery andY at shaft orY Isp-indieV repairsare required to marily required for the buildingup or" a screen of this description.

I The invention will be best understood br referencey to the followin description when takenin connection wit the accompanying Villustration of one specific embodiment thereof, while its scope will be more particularly claims.

In the drawings: l Figure 1 is a side elevation, partly in section and' partly broken away, showing a pointed out in the appended paper-cylinder mold embodying one form of the ifi veaitioiigg`4 is a sid elevation,` partly in end View d partlyin' section, on the line 2-*2 oit-Ff .,"l, .s'howingthesame cylinder mold; iFi 3 iS a plan view of on'eofthe2 segmental of the supporting frame or i F1544 a lside elevation of thesanie; and Fig.. isfa plan view of a portion of the foraminous covering. which may be applied tothe frame.

Referring, to the drawings, and to the em- `bodimentotr' the invention illustrated therein, the same is constructed of interchange` able sectional the cylindrical frame `work .beingcarrie supportingmemberswhich herein are in the form of -spiders'. -Tliese consist of similar end spiders 2 2 and intermediate spiders `l-ih the latter beingof the same construc- ,tion and of any suitable number, accordin to the length-.and number of longitudina sections desired for the drum. A Besides the segmental supporting sections which unite the [adjacent spiders and which are hereinafter 'more particularly de scribed, the -s ders are herein longitudi? nally united y' a' series of` tie rods 5, .cochone of 'which passes-through holes in the corresponding legs of successive spiders, there being" rovided one tie rod for each parts aembled upon the by ajseries of radial ion spiderleg t -,e'latter being?,` herein. six' in number. o assist .in spacing-the spiders, they. are separated (Fig. 1) by tl'ie tubular spacing` members 6, which latter have the iio end plugs or blocks resting against the spider le The tie rods 5 and` spacing' tubes ad to the rigidity of the structure,

but if desired, may be omitted for the sake ol.- isimplicity and cheapness, and the segmental units relied up`on to unite the several sections in the structure.

llaeh of the intermediate spiders 25 carriesl a circumferential ring 8, the periphery of which :il` 9 is accurately machined to the required diameter of the supporting frame, and opposite faces of which are also machined to receive side walls 1() of the segmental supporting units which go to make up the supporting frame.

These segmental supporting units are preferably similar in construction and inter changeable, the details of one of such units being shown more particularly in Figs. 3 and 4. Each segmental unit is 1n skeleton or open or grille shaped form and consists of the. side walls l0, united by the cross Webs 1l and the intermediate web 12, together with the segmental arc-shaped supportin members 123. The latter, when assemble form Continuous ring-supporting members intermediate the spider ring-supports 9 and accurately machined to have the circumferential dimensions corresponding to the di inensions of the spider ring supports 9.

These segmental sections 4 may be fastened to the faces of the adjoining spiders by means of clam ing bolts 14. If desired, the circumferentia ly adjoining ends of adjacent sections in the same unit may be secured one to the other. This, however, is

.not necessary, and herein theseginents are bolted only to the spiders, bringing into abutment, or approximate abutment, adjoining ends of the ring-supporting segments 13, as shown in the lower part of F ig. 1.

In order to prevent any unevenness which might be imparted to the foraminous covering applied to this framework due toa longitudinally continuous line of joints between adjoining segments,.the joints between the adjoining segmental ring-supports are staggered or thrown lout of llne by extending,.as represented in Fig;l 3, one ring-supjortm segment 13 to the pointl farther eyon the web 11 than the end 16 of the remaining rin segment, while at the opposite web exten in the last-named ring segment to the .point 1 farther than the end 18 of the firstnamed ring segbment.

When assem led, the adjacent long and short projections of the ring one section abut or face res ectiveiy against the corresponding short an long rejections o? the adjacent unit, as indicate in Fig. 1.

Each end spider 2 is also provided with a circumferential ring 19, the inner face of which is machined to receive and have bolted thereto the side walls 10 of one set of segmental sections.

segments 1n any| strong, light, true and open.

It will be seen that the frame work of this screen or cylinder mold is grille shaped or open in form, presenting to the foraminous covering a series of circumferentialring sup` ports formed by the ring segment 13 and the spider rings 9. The frame further comprises a series of longitudinally united sections, cach section consisting of a spider with a set of individual segmental frame units bolted thereto, the units being longitudinally united by bolting the frame units of one section to the spider of the next adjacent section. Furtherinore, it will be understood that the various longitudinal sections which go to make np the cylindrical frame are preferably precisely alike, except the end sections where the end s iders differ slightly in construction, so tiat any one intermediate section ma be easily removed and a similar stand ar ized intermediate section s .bstituted therefor, or either end section may be removed and a similar standardized end section substituted.

It will also be observed that the segmental frame units which are continuously and circumferentially united in each section are preferably precisely alike and standardized in form, so that 'any one segmental unit may be removed and another similar unit substituted in `its place. Herein, the circumfereiv tial units are eight in number, but more or fewer may be employed as may be desired.

By the described construction, the spiders and the segmental frame units ma be made of cast iron, and the circumferentia ring supports 13, on which the foraminous covering is to be applied, as well as the side walls 10, may be accurately machined prior to assembling. This machining and the drilling of the holes in both the s lders and the segmental sections may be one individually and prior to assembling with the aid of templets or jigs by automatic machinery, and by relatively c cap, unskilled labor, and the parts thus accurately made in standardized form may be assembled by relatively unskilled labor, thus resulting in a great saving of expense. Furthermore, required repairs may be cheaply and easil made at the mill where the screen ormol is in use, since a standard section or a standard segment may be 'supplied and substituted at any time for a damaged one, and such repairs may be made by relatively unskilled labor. In addition to' these advantages of cheapness and ease of repairs, the described form of screen frame has the further advantages of heing stiff,

The frame-work as described may beycovered with any desired form of foraminous covering. Herein, .I have shown the framework covered as with the relatively coarse covering 20, shown in Fig. 5. This may be applied in any desired way, but herein, as indicated in Fig. 2, I have shown thiscov-l `ering as comprising four adjacent segments united longitudinally along,r elements of the cylinder by means of the angle pieces 21, which are bolted together. This cylinder ma v be then covered with any of the usual wire or wire mesh coverings. as desired, as for example, the wire covering indicated. at and the still finer Wire covering indicated at 23.

ll'hile I have herein shown and described for purposes of illustration one specific embodiment of the invention, it will be understood that extensive deviations may be made therefrom, and from the mechanical details herein shown, and from the relative arrange nient of parts, all without departing from the spirit of the invention.

Claims.

l. A screen for paper manufacture having a support for its foraminous covering'V comprising a series of longitudinally7 united units, each unit comprising aplurality of segmental frame supporting` sections.

2. A screen for paper manufacture having foraruinous covering and a cylindrical support for its foraminous covering comprising a shaft, a series of spiders mounted thereon, and a supporting framework carried by the spiders comprising individually separable segmental sections between adjacent spiders forming a circumferentially continuous supportingframe.

3. )A screen for paper manufacture having a cylindrical support for its foraminous covering comprising a shaft, a series of spiders mounted thereon, and a supporting framework carried by the spiders comprising a plurality of segmental grille-like ,sections between adjacent spiders` said sections forming between adjacent spiders a circumferentially continuous supporting` frame and presenting one or more accurately dimensioned ring supports to serve as a rest for the foraminous covering. A

` 4. A. screen for paper manufacture having a support orits foraniinpus covering, the same including sets of emular, interchangeable segmental sections, each set presenting one or more ring-like supports Jformed by the segments of that set and serving as a rest for the foraminous covering, the `joints between the segments of successive rlngs being longitudinally out of line.

5. A screen for paper manufacture having a support for its fora-minous covering, the same including sets of similar, interchangeable' segmental sections; each set presenting one or more ring-like supports formed by the segments of that set and serving as a rest for the foraminous covering` the joints of one ring beingr displaced with relation to the joints of another supporting ring whereby the foraininous covering may be applied to the support more evenly.

G. In a screen for paper manufacture, a

supportfor the foraininous coverings,- cour prlsing a plurality of radial supporting members, each radial support having secured thereto a series of segmental, grille-likeframe pieces forming a circumferentially continuous supporting frame for the foraminous covering.

7. In a screen for paper manufacture, a supporting frame for a series of units longitudinally united, each unit comprising a plurality of segmental, grille-like, cast-iron sections having accurately machined supporting surfaces circumferentially united into a substantially continuous supporting frame for the foraminous covering.

8. A screen for paper manufacture haviup` a foraminous covering and a support for the foraminous covering built up from end to end of interchangeable sections having individually machined, interclnunrrublo frame supporting segments.

9. A screen having an exterior foraininous covering' and a cylindrical, open-work frame support for the covering, said support bw ing' formed of circumferentially separated, interchangeable, individually' removable. sec tional units presenting each exterior, arcshaped supporting Walls providing when assembled a cylindrical supportingI frame for the covering.

10. As an article etmamifacture, a segmental section for a cylindrical screen consisting of an open, skeleton, grille-like segment portion provided with means for se curing;` the same in appropriate position on a radial support.

11. As a new article of manufacture, a segmental section for a cylindrical screen frame having arc-shaped supporting ring` segments connected by cross webs and presenting arc-shaped exterior supportingr walls for the foraminous covering of the screen, said walls extending from end to end of the section.

12. As a new article of manufacture, a segmental section for a cylindrical screcn frame consisting of an open skeleton, grillelike segment having a plurality of longitudinal webs including one or more arcshaped, supporting ring segments connected by cross webs.

13. As a new article of manufacture a segmental section vfor a cylindrical screen frame having a plurality of longitudinal supporting arc-shaped ribs of equal length but circumferentially offset.

14. A screen for paper manufacture having a frame consisting of longitudinally united units, each comprising a radial supporting member and carrying an open cylindrical frame-Work having both circumferentiafl and longitudinal uniting ribs. Y

15. A screen for paper manufacture havinga frame consisting of longitudinally united units, each comprising a radial supporting member und enrrying an Open. ey lindricul frame-Work, and tie reds; 'tying the rudi-nl suppnrting members i'ogether.

1. A screen having n foruminnus euvelvn imgr and .provided with zi` supporting framework having i1iterclningrnble, ring supporting` members; presenting longitudinally seperated ring supports for seid inrzixninons covering'.

17, A sereen for paper nnnnli'nelnre bnring :in exlerinr l'ornminons covering und un underlying support therefor, ihe ln'irr vnnr prising n si-ries 0f supports, with ineens uniting them into a skeleton supporting ilfrzmie, und inlerelnlngezlble nieminrs` enrried by seid supports and providing e mein cirelnnferenlinl support for ihe lfnrnniinons eovering whereby said ereumlerrmiinl snpporiing members muy be replaced v'iilmnl disnnmtling Said skeleton supperl.

18. A screen for palper manufacture heving' :in exterior fernininons covering und an underlying support therefor. the lzxllrr wenn pristine; :x series of Indinl snppnrls willi means uniting them info n skeleton slipper-L ing frame, ilnlividlnlliv nnnhined members married by said radial snppnris providing n main snpliori for lhe 'fnraminmis rnvrring, seid member` being individually renin 'able und replaceable without4 l'lisinnnllinnf` said skeleton frame.

i9. A screen, for paper nmnnfnetnre heving en exierinr fnrznninons covering und un underlying support therefnr, the latter ceniprising parte united inte a skeleton snpportng frame, and interchangeable supporting' members carried thereb)T presenting when assembled separated ringdike snppnrls on Whiel'i the forznninous covering muy be luid and secured.

A screen for paper manufacture coniprising :1n exterior oraminous covering, a skelelnn supporting frame` and means providing en underlying, circnmi'erelnial skeleton Support for the fornminous covering comprising members individually replaceable mid lmnovfible from the Supporting freine Without dismantling the latter.

21. A screen for peper manufacture havingr en exterior foraminons covering and a suppnrt therefor, the leiter comprising a series of supports with means for uniting them into a skeleton supporting frame, sind interchangeable members carried bv seid supports comprising each segmental separated units und providing one assembled and main circumferential support` for the 'orznninous covering whereby said units muy be replaced without dismantling said skeleton frame.

ln testimony whereof, I have signed my neme te this specification.

ANTON J. HAUG. 

